Datasheet

DocID028794 Rev 4 165/224
STM32L433xx Electrical characteristics
193
Figure 31. Typical connection diagram using the ADC
1. Refer to Table 75: ADC characteristics for the values of R
AIN
and C
ADC
.
2. C
parasitic
represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the
pad capacitance (refer to Table 70: I/O static characteristics for the value of the pad capacitance). A high
C
parasitic
value will downgrade conversion accuracy. To remedy this, f
ADC
should be reduced.
3. Refer to Table 70: I/O static characteristics for the values of Ilkg.
General PCB design guidelines
Power supply decoupling should be performed as shown in Figure 17: Power supply
scheme. The 10 nF capacitor should be ceramic (good quality) and it should be placed as
close as possible to the chip.
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